After the quick wait last night, it was disappointing that in the morning Grand had a ten Turban interval delay. Got out at sunrise and was three hours later when Grand finally erupted. Several of the Turban eruptions were not preceded by any overflow from Grand.
The pool finally filled nicely, with Vent overflowing before Grand initiated the eruption, with Turban following a second later. The burst duration of 9m20s was short enough for a One Burst Grand, but after about 80 seconds, with lots of sloshing about at the end, we got a second burst. That burst lasted two minutes.
I've noticed that when Vent & Turban quit at the end of an eruption, as in this case, the pause before the restart is fairly short. And the activity quickly become quite vigorous. In this case, it took quite a bit of heavy steam before water started jetting in Turban.
Six hours later, I was back out at Grand. This was the short interval that was expected in the morning. Grand's pool was filling nicely, and completely full, but waves or other variations. Then suddenly, we got a 10 meter boop to start the eruption. Was the most sudden start that I've seen in a while. It then took Turban a minute to start, and Vent almost four minutes before it joined in. This One Burst Grand eruption, at least, lasted about 10m20s.
There was still a bit of glow in the sky when we headed out again. After a couple of Turban eruptions, we got a delay interval. It was interesting in that the overflow didn't start to really pick up until about 22 minutes after the previous Turban start.
Three Turban intervals later we got another interesting delay interval. The overflow could be heard at around the fifteen minute mark, but then decreased a few minutes later. But Turban did not erupt, and around the 23 minute mark, the overflow picked up again. When Turban started at 33 minutes, it started out strong, but Grand didn't follow through. It finally started 68 seconds later.
The burst lasted only 8-1/2 minutes. So it was a relief to get a second strong burst, nicely lit by the moon. After that, Vent & Turban tried to quit, but over the course of the next few minutes, the activity picked back up and by then, Vent was roaring away.